$\lim_{x\to3}\left(\frac{\sqrt{3}-\sqrt{x}}{x^2-9}\right)$
$x^2-2x\ge0$
$\lim_{x\to4}\left(\frac{\sqrt{x^3}-8}{x^{\frac{1}{2}}-2}\right)$
$4^6\cdot4^7$
$\int csc^2\left(3+5x\right)dx$
$\int\left(\frac{1}{x^2-\:x}\right)dx$
$\left(3^2x^7\right)^1$
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